OLED superior performance technology leap but the slow progress of industrialization

Organic light emitting diode (Organic Light Emitting Diode, OLED) has a self luminous, low power consumption, wide viewing angle, high brightness, thin, winding, high resolution, fast response and wide range of working temperature and a series of advantages, the industry was widely considered to be the most likely in the future display market a new generation of display devices, it has attracted many enterprises competing in the global display technology and material development.

Since Dr. Deng Qingyun Eastman of the United States Chinese Kodak company in 1987 successfully prepared after OLED, as a set of various advantages unparalleled in a new graphic display and lighting technology, stimulate research and development boom in the global scope, the luminous efficiency has been improved rapidly, such as the luminous efficiency of small molecule OLED green element from 1987 1.5 to 2000 Kodak lm/W, the pioneer (Kodak authorized production) has reached 16 lm/W, the 2005 German Novaled manufacturers by doping technology rapidly increased to 110lm/W.

However, with a series of excellent performance of OLED, although the technology research and development (such as luminous efficiency, material and device design) has achieved rapid development, but until 1997 by the Japanese Pioneer Co realized the car panel with single color OLED display production, 4 million 976 thousand tablet shipments in 2002 global OLED panel, the market value of about 110 million dollars, compared to the LCD panel over the past ten years of explosive growth (with an annual output value of tens of billions of dollars), OLED pre industrialization process is slow and difficult.

Although OLED has a lot of excellent performance, but since the successful preparation of the sample after more than ten years, has not been able to enter mass production applications. The reason, one with TN, STN and TFT LCD panel have been mature outbreak of application extrusion, constraints on the other hand, synthetic materials is mainly affected by previous OLED lifetime, the rate of finished products and its related problems.